2051
2051
Pneumatic rotary drive
• Modular program for mounting of quarter turn valves such as ball valves and butterfly valves • NAMUR and ISO 5211 interfaces • Position feedback (including Ex-Versions ) • SideControl Positioner ready Type 2051 can be combined with…
Type 6518/6519
Type 8792/93
Type 2654
Type TEUXXX
Type 2671
Solenoid valve
Positioner SideControl
Stainless steel ball valve
Position feedback
Metal butterfly valve
The 2051 pneumatic rotary drives are low maintenance single or double-acting pneumatic linear piston actuators where linear movement of the piston due to the pilot air causes a 90º rotation of the connected valve. Actuator-valve coupling is made via a universal ISO 5211 mechanical interface and the status of ball or butterfly valve can be monitored at a control system through a range of rugged feedback switches. The drives can also be used as modulating control actuators by the addition of Bürkert’s range of SideControl positioners.
Technical data Materials Actuator Piston Seal Control medium
filtered compressed air with or without oil
Control pressure
3-8 bar single-acting 2.5-8 bar double-acting max. 8 bar
Tumg
-40 up to + 80 ºC (FKM: -15 up to +150 ºC)
Rotation
90º, adjustable before -5 up to 95º
Adjustable angle
every 20º
Interface Pilot air ports Control function A Single-acting actuator return by spring, operating e.g. with pilot valve Control function I Double-acting actuator, operating e.g. with pilot valve
A
aluminium alloy aluminium special NBR
Feedback signal Fittings
NAMUR Flange interface VDE/VDI 3845 Size 10-100: G 1/8, Size 150-450: G 1/4 NAMUR VDE/VDI 3845 ISO 5211
P
A
P
Control function B Single-acting actuator return by spring
Function principles see p. 3
www.burkert.com
p. 1/4
2051
Ordering chart (other versions on request) Double-acting actuator (Control function I)
5
5,5
6
7
8
closing
15
10
13.3
16.6
18.3
19.9
23.3
26.6
0.09
0.15
30
17.6
23.5
29.3
32
35.2
41
46.9
0.16
60
34.9
46.5
58.2
64
69.8
81.4
93.1
0.31
100
54.9
73.2
91.5
101
110
128
146
0.51
0.78
3.7
214 525
150
79.8
106
133
146
160
186
213
0.71
1.11
5.2
214 526
220
129
172
215
236
258
301
344
1.19
1.8
8
214 527
300
166
222
277
305
332
388
433
1.54
2.34
9.8
214 528
Item no.
4
Control pressure (bar)
Weight [kg]
3
opening
Air volume(l)
Actuatorsize
Torque (Nm) dependent on control pressure
1
214 520
0.26
1.6
214 522
0.49
2.7
214 524
Air volume(l)
Actuator size
Control pressure (bar)
Item no. (Control function B)
Torque (Nm) dependent on control pressure
Item no. (Control function A)
Single-acting actuator (Control function A, 6 spring packages per side)
0º
90º
0º
90º
0º
90º
90º
0º
15
10.2
6.6
11.9
8.2
18.5
14.9
11.7
8.1
0.09
0.15
1.1
214 529
214 537
30
18.9
12
21.9
14.9
33.6
26.7
20.2
13.3
0.16
0.26
1.7
214 530
214 538 214 539
spring force Weight [kg]
8
closing
6
opening
5,5
60
37.5
22.4
43.3
28.3
66.5
51.5
41.5
26.5
0.31
0.49
3.1
214 531
100
56.7
31.4
65.8
40.5
102
77.1
69.3
44
0.51
0.78
4.3
214 532
214 540
150
85.4
51.7
99
65
152
118
94.5
60.8
0.71
1.11
6.1
214 533
214 541
220
138
79
159
101
245
187
157
98.4
1.19
1.8
9.3
214 534
214 542
300
179
107
206
135
317
245
198
126
1.54
2.34
12
214 535
214 543
450
281
169
324
213
498
386
309
198
2.41
3.78
17
214 536
214 545
Specifications
Item no.
Ordering chart – Accessories
universal adapter for shaft
787 338
universal assembly bridge
770 294
p. 2/4
2051
Functional principle
Control function
A
Air supplied to Port “2” forces the pistons toward the actuator end caps, compressing the springs. A counter-clockwise rotation is achieved. Exhaust air exits from Port 4.
Control function
The loss of air pressure (air or electric failure) at Port “2” allows the springs to force the pistons inward. A clockwise rotation is achieved. Exhaust air exits from Port 2.
B
Is the opposite rotating direction of control function A.
Control function
I
Air supplied to port 2 forces the pistons towards the actuator end caps. A counterclockwise rotation is achieved. Exhaust air exits from Port 4.
Air supplied to Port 4 forces the pistons inward. A clockwise rotation is achieved. Exhaust air exits from Port 2.
Note: Top view
p. 3/4
2051
Dimensions [mm]
H
Z1
Connection 4
B
Connection2
X
T-Connection
Y I
Q1
W
W1
Q
G
SW
M 5xE
80 A
X
45°
Y
32
30
VDI/VDE 3845
Abtrieb - ISO5211
M 5x8
N
M
24
Size
A
B
E
H
ØI
M
N
Q
Q1
W
W1
ØZ1
G
SW
ISO 5211
15
136
69
4
20
30
29
43
36
50
M5
M6
37
1/8”
11
F03-05
30
153.5
85
8
20
35
36
48.5
50
70
M6
M8
37
1/8”
14
F05-07
60
203.5
102
8
20
35
42.5
50.5
50
70
M6
M8
37
1/8”
14
F05-07
100
241
115
8
20
55
49.5
56.5
50
70
M6
M8
37
1/8”
17
F05-07
150
259
127
8
20
55
55.5
63
70
102
M8
M10
37
1/4”
17
F07-10
220
304
145
8
30
70
64
72
70
102
M8
M10
51
1/4”
22
F07-10
300
333
157
8
30
70
69.5
77
70
102
M8
M10
51
1/4”
22
F07-10
450
394.5
177
8
30
85
80
86
102
125
M10
M12
60
1/4”
27
F10-12
To find your nearest Bürkert facility, click on the orange box In case of special application conditions, please consult for advice.
www.burkert.com
Subject to alteration. © Christian Bürkert GmbH & Co. KG
1407/9_EU-en_00895035
p. 4/4
Pneumatic rotary drive
• Modular program for mounting of quarter turn valves such as ball valves and butterfly valves • NAMUR and ISO 5211 interfaces • Position feedback (including Ex-Versions ) • SideControl Positioner ready Type 2051 can be combined with…
Type 6518/6519
Type 8792/93
Type 2654
Type TEUXXX
Type 2671
Solenoid valve
Positioner SideControl
Stainless steel ball valve
Position feedback
Metal butterfly valve
The 2051 pneumatic rotary drives are low maintenance single or double-acting pneumatic linear piston actuators where linear movement of the piston due to the pilot air causes a 90º rotation of the connected valve. Actuator-valve coupling is made via a universal ISO 5211 mechanical interface and the status of ball or butterfly valve can be monitored at a control system through a range of rugged feedback switches. The drives can also be used as modulating control actuators by the addition of Bürkert’s range of SideControl positioners.
Technical data Materials Actuator Piston Seal Control medium
filtered compressed air with or without oil
Control pressure
3-8 bar single-acting 2.5-8 bar double-acting max. 8 bar
Tumg
-40 up to + 80 ºC (FKM: -15 up to +150 ºC)
Rotation
90º, adjustable before -5 up to 95º
Adjustable angle
every 20º
Interface Pilot air ports Control function A Single-acting actuator return by spring, operating e.g. with pilot valve Control function I Double-acting actuator, operating e.g. with pilot valve
A
aluminium alloy aluminium special NBR
Feedback signal Fittings
NAMUR Flange interface VDE/VDI 3845 Size 10-100: G 1/8, Size 150-450: G 1/4 NAMUR VDE/VDI 3845 ISO 5211
P
A
P
Control function B Single-acting actuator return by spring
Function principles see p. 3
www.burkert.com
p. 1/4
2051
Ordering chart (other versions on request) Double-acting actuator (Control function I)
5
5,5
6
7
8
closing
15
10
13.3
16.6
18.3
19.9
23.3
26.6
0.09
0.15
30
17.6
23.5
29.3
32
35.2
41
46.9
0.16
60
34.9
46.5
58.2
64
69.8
81.4
93.1
0.31
100
54.9
73.2
91.5
101
110
128
146
0.51
0.78
3.7
214 525
150
79.8
106
133
146
160
186
213
0.71
1.11
5.2
214 526
220
129
172
215
236
258
301
344
1.19
1.8
8
214 527
300
166
222
277
305
332
388
433
1.54
2.34
9.8
214 528
Item no.
4
Control pressure (bar)
Weight [kg]
3
opening
Air volume(l)
Actuatorsize
Torque (Nm) dependent on control pressure
1
214 520
0.26
1.6
214 522
0.49
2.7
214 524
Air volume(l)
Actuator size
Control pressure (bar)
Item no. (Control function B)
Torque (Nm) dependent on control pressure
Item no. (Control function A)
Single-acting actuator (Control function A, 6 spring packages per side)
0º
90º
0º
90º
0º
90º
90º
0º
15
10.2
6.6
11.9
8.2
18.5
14.9
11.7
8.1
0.09
0.15
1.1
214 529
214 537
30
18.9
12
21.9
14.9
33.6
26.7
20.2
13.3
0.16
0.26
1.7
214 530
214 538 214 539
spring force Weight [kg]
8
closing
6
opening
5,5
60
37.5
22.4
43.3
28.3
66.5
51.5
41.5
26.5
0.31
0.49
3.1
214 531
100
56.7
31.4
65.8
40.5
102
77.1
69.3
44
0.51
0.78
4.3
214 532
214 540
150
85.4
51.7
99
65
152
118
94.5
60.8
0.71
1.11
6.1
214 533
214 541
220
138
79
159
101
245
187
157
98.4
1.19
1.8
9.3
214 534
214 542
300
179
107
206
135
317
245
198
126
1.54
2.34
12
214 535
214 543
450
281
169
324
213
498
386
309
198
2.41
3.78
17
214 536
214 545
Specifications
Item no.
Ordering chart – Accessories
universal adapter for shaft
787 338
universal assembly bridge
770 294
p. 2/4
2051
Functional principle
Control function
A
Air supplied to Port “2” forces the pistons toward the actuator end caps, compressing the springs. A counter-clockwise rotation is achieved. Exhaust air exits from Port 4.
Control function
The loss of air pressure (air or electric failure) at Port “2” allows the springs to force the pistons inward. A clockwise rotation is achieved. Exhaust air exits from Port 2.
B
Is the opposite rotating direction of control function A.
Control function
I
Air supplied to port 2 forces the pistons towards the actuator end caps. A counterclockwise rotation is achieved. Exhaust air exits from Port 4.
Air supplied to Port 4 forces the pistons inward. A clockwise rotation is achieved. Exhaust air exits from Port 2.
Note: Top view
p. 3/4
2051
Dimensions [mm]
H
Z1
Connection 4
B
Connection2
X
T-Connection
Y I
Q1
W
W1
Q
G
SW
M 5xE
80 A
X
45°
Y
32
30
VDI/VDE 3845
Abtrieb - ISO5211
M 5x8
N
M
24
Size
A
B
E
H
ØI
M
N
Q
Q1
W
W1
ØZ1
G
SW
ISO 5211
15
136
69
4
20
30
29
43
36
50
M5
M6
37
1/8”
11
F03-05
30
153.5
85
8
20
35
36
48.5
50
70
M6
M8
37
1/8”
14
F05-07
60
203.5
102
8
20
35
42.5
50.5
50
70
M6
M8
37
1/8”
14
F05-07
100
241
115
8
20
55
49.5
56.5
50
70
M6
M8
37
1/8”
17
F05-07
150
259
127
8
20
55
55.5
63
70
102
M8
M10
37
1/4”
17
F07-10
220
304
145
8
30
70
64
72
70
102
M8
M10
51
1/4”
22
F07-10
300
333
157
8
30
70
69.5
77
70
102
M8
M10
51
1/4”
22
F07-10
450
394.5
177
8
30
85
80
86
102
125
M10
M12
60
1/4”
27
F10-12
To find your nearest Bürkert facility, click on the orange box In case of special application conditions, please consult for advice.
www.burkert.com
Subject to alteration. © Christian Bürkert GmbH & Co. KG
1407/9_EU-en_00895035
p. 4/4
